Gearing.



A. GAZAGNAIRE.

GEARING.

APPLICATION FILED Ann, 1912.

1,074,710. Patented Oct. 7, 1913.

Fig.1

0 I 2 J S 1 n vmxommml COnWASHINGTON. n, c.

ADOLPI-IE GAZAGNAIRE, OF CANNES, FRANCE.

GEARING.

To all whom it may concern Be it known that I, ADoLrHn GAZAGNAIRE,

citizen of the Republic of France, residing ble speeds, increasing tonormal speed or decreasing from normal speed to the stop page of thelift. These variations of speed may be progressive or intermittent andare effected by intermediation of transforming mechanism dependentmechanically or electrically on the movement of the engine and whichtransforming mechanism is connected to any suitable change-speedmechanism which is thus automatically operated.

The accompanying drawing shows one application of the system to anelectric lift.

Figure l is a plan view of the control mechanism. Fig. 2 is a similarview, the parts being displaced so as to produce a different speed ofthe moving body. Fig. 3 is an elevation.

The mechanism shown in the drawing has been devised particularly forcomplying with the following conditions: very smooth starting, verysmooth stoppage, exact stop page whatever may be the speed and theweight carried. By this mechanism the power required for starting ispractically equal to that necessary for maintaining normal speed, orgreater than that by th to 9th at most. For this ur ose a chan e- L t)speed mechanism 0 (shown in the drawing as of the progressive type, butwhich maybe stepped as in automobiles) is arranged between the drivingmechanism a and the driven mechanism Z), in the present case the winchactuating the movable body. This change-speed mechanism is actuated inany suitable manner by intermediation of a transforming mechanism (Zcontrolled by the movement of the engine itself.

Metal disks 9 and h carrying an outer friction rim formed by leatherdisks standing on edge and tightly pressed together or by any othersuitable friction means, are mounted on the shaft e of the engine a andon the driven shaft f. The movement of the driving disk 9 is transmittedto the driven disk It by intermediation of two friction Specification ofLetters Patent.

Application filed April 2, 1912.

Patented Oct. "2, 1913. Serial No. 888,044.

plates 21 mounted loose in bearings which can move the plates in the oneor the other direction. A spring device, not shown in the drawing, keepsthe plates 2' pressed against the disks 9 and it so as to cause them toadhere sufliciently to be rotated by the latter. On the other hand thiscontact can be interrupted by any suitable mechanism for the purpose ofdisconnecting the transmission mechanism.

In the example shown in the drawing the displacements of the plates 2'progressively increase or decrease according as their axis is removedfrom or approaches to the middle plane parallel to the planes of thedriving disk 9 and the driven disk h.

For this purpose the driving shaft a by means of suitable gearing 7c anda suitable .clutch Z, controls an endless screw 972. meshing with a wormwheel a. Crank disks 0 of adjustable eccentricity are mounted on theshaft of the wheel a and act on connecting rods 79 which byintennediation of the rods 9 cause the slides r to move along the guidess; the shafts j of the intermediate friction plates 71 are rotatablymounted in the slides r. The driving of the reducing gearing 70 can beeffected by an auxiliary relay engine and from what has just been statedit will be seen that the ratio of the driving and driven speedsprogressively changes until attaining in the one direction of themovement the normal speed, and in the other direction the lowest speedpermitting the stoppage of the movable body. Under these conditions avery smooth starting is obtained and the intensity of the currentremains practically equal to that existing when the movable body istraveling at normal speed, inasmuch as the engine starts under no loadand is only connect-ed up for producing an effortdecreased in the ratioof the driving radii of the change-speed mechanism. ihe speed isprogressively modified up to the normal speed, the maximum speed beingattained for a half revolution of the crank disks. At this moment aregulator or electric contact can disconnect the system if the normalspeed has to be maintained for a certain time. On reaching a certaindistance from the spot at which it is desired to stop, an electriccontact connects up the clutch Z so that the movement of tie engine, byintermediation of connecting rods and cranks, returns the frictionplates 2' into their initial position by moving them in an oppositedirection, reducing the speed of the movable body.

The arrangement works as follows :-A press-button provided in the cageis pushed in and owing to a switch-board switches on the engine a whileat the same time electroinagnets release the brakes of the winch and theengine. The latter having been started under no load, the clutch Z isthen connected up by any suitable means and the friction plates 2' arerotated by the engine until obtaining the normal speed, passing throughvalues determined by the suitable choice of the transmission mechanism.The transmission (Z is then disconnected from the engine a. In order toobtain the stoppage at a predetermined distance from the starting spot,the clutch Z transmitting the movement of the engine a to thechange-speed transmission mechanism (Z controlling the change-speedgearing is connected up so that the speed is diminished until the lowestspeed is obtained. The current is then switched off and the mechanismuncoupled. \Vhen descending the same operations occur in reverse order.

Claims:

1. In a control mechanism for a body in motion, the combination of apair of friction disks; driving means for one of the disks; frictionplates each engaging an edge of both disks; slidable means forsupporting the plates; a pair of cranks; a rod connecting each crank toone of .the sliding means; a connection between the cranks and thedriving means for slowly revolving the cranks; and a clutch in saidconnection.

2. In a control mechanism for a body in motion, the combination ofoppositely disposed friction disks; a driving means for driving one ofthe disks; slides at opposite edges of the disks; friction platescarried by said slides; a pair of cranks; links conallel to the drivingdisk; guides on oppo site sides of said shaft; slides on the guides;plates rotatably mounted on said slides respectively and engaging thedisks; a worm screw; a clutch device connecting the screw with thedriving shaft; a worm wheel engaged by said screw; cranks rotated bysaid Wheel; and links connecting the respective cranks to said slides.

4t. In a control mechanism for a body in motion, the combination of adriving shaft; a driven shaft in alinement therewith; a

friction disk on the driving shaft; a fi'ictioii disk on the drivenshaft; a pair of guides on opposite sides of said shafts; slidesprovided on said guides respectively; friction plates rotatably mountedon said slides respectively and pressed against op-- posite sides ofsaid disks; a Worm geared to said driving shaft and provided with aclutch therebetween; a worm wheel engagmg said screw; a wheel shaftsupporting said worm wheel and parallel to the axis of said plates;disks at opposite ends of said shaft and each provided with an eccentriccrank pin; and adjustable links connecting the respective crank pinswith the adjacent slides. Y

In testimony whereof I affix my signature in presence of two witnesses.

ADOLIHE GAZAGNAIRE.

Vitnesses CHARLES BRASHEARS BEYLARD, JOSEPH VAN DAM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

